Question

Find x and y such that x + y = 220 and the difference

between x and y is 20​

Answer 1

Given that

x+y = 220

x-y =20

Adding both the equations

2x = 240

x =120

Substitute x in equation 2

120-y = 20

y = 120 - 20

y = 100

x = 120, y =100

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